Gale Harrington - Carets

scrabble.js

@@ -1,14 +1,106 @@
-const Scrabble = {
-  score: function(word) {
-    // TODO: implement score
-  }
 
-  // TODO: add the highestScoreFrom method
+const Scrabble = {
 
+  score: function (word) {
+    let score = word.length === 7 ? 50 : 0;
+    const LETTER_TO_VALUE = {
+      A: 1, E: 1, I: 1, O: 1, U: 1, L: 1, N: 1,
+      R: 1, S: 1, T: 1, D: 2, G: 2, B: 3, C: 3,
+      M: 3, P: 3, F: 4, H: 4, V: 4, W: 4, Y: 4,
+      K: 5, J: 8, X: 8, Q: 10, Z: 10,
+    };
+    const ALPHA = /[a-zA-Z]/;
+    function ArgumentError(message) {
+      this.message = message;
+      this.name = 'ArgumentError';
+    }
+    if (word.length > 7 || word.length < 1) {
+      throw new ArgumentError('Invalid word length detected');
+    }
+    word.split('').forEach((letter) => {
+      if (letter.match(ALPHA)) {
+        score += parseInt(LETTER_TO_VALUE[letter.toUpperCase()], 10);
+      } else {
+        throw new ArgumentError('Invalid characters detected');
+      }
+    });
+    return score;
+  },
+  highestScoreFrom: function (array) {
+    if (Array.isArray(array) !== true || array.length === 0) {
+      throw new Error('Requires at least one word');
+    }
+    if (array.length === 1) {
+      return array[0];
+    }
+    if (Scrabble.score(array[0]) > Scrabble.score(array[1])) {
+      return array[0];
+    } else if (Scrabble.score(array[0]) < Scrabble.score(array[1])) {
+      return array[1];
+    } else if (Scrabble.score(array[0]) === Scrabble.score(array[1])) {
+      if (array[0].length === 7) {
+        return array[0];
+      } else if (array[1].length === 7) {
+        return array[1];
+      } else {
+        if (array[0].length < array[1].length) {
+          return array[0];
+        } else if (array[0].length > array[1].length) {
+          return array[1];
+        }
+        return array[0];
+      }
+    }
+  },
 };
 
 Scrabble.Player = class {
-  // TODO: implement the Player class
+  constructor(name) {
+    if (typeof name !== 'string') {
+      throw new Error('Must provide player name as a string');
+    }
+    this.name = name;
+    this.plays = [];
+  }
+  play(word) {
+    if (this.hasWon()) {
+      return false;
+    }
+    Scrabble.score(word);
+    this.plays.push(word);
+    return true;
+  }
+  totalScore() {
+    const total =
+    this.plays.reduce(function(total, word) {
+      return total + Scrabble.score(word);
+    }, 0);
+    return total;
+  }
+  hasWon() {
+    if (this.totalScore() < 100) {
+      return false;
+    }
+    return true;
+  }
+  highestWordScore() {
+    if (this.plays.length === 0) {
+      throw new Error('Requires at least one played word');
+    }
+    const scores =
+    this.plays.map(word => Scrabble.score(word));
+    return Math.max(...scores);
+  }
+  highestScoringWord() {
+    const highest = this.highestWordScore();
+    let returningWord = null;
+    this.plays.forEach((word) => {
+      if (Scrabble.score(word) === highest) {
+        returningWord = word;
+      }
+    });
+    return returningWord;
+  }
 };
 
 module.exports = Scrabble;

spec/scrabble_spec.js

@@ -1,3 +1,4 @@
+/*eslint-disable*/
 const Scrabble = require('../scrabble');
 
 describe('score', function() {